How To Create A Listview With 2 Columns Showing All Installed Android Apps And The Permissions Along With It?

I'm pretty newbie to Android development (2 days old). I intend to create an app that list all the currently installed applications in the device and a column beside each of those

Solution 1:

Firstly you need load apps list and permission for every apps. I do it inside Activity.onCreate to simplify example. The better way to do it inside AsyncTask

publicclassMainActivityextendsAppCompatActivity {

    @OverrideprotectedvoidonCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        finalPackageManagerpackageManager= getPackageManager();

        final List<Pair<String, List<String>>> appsWithPermission = newArrayList<>();

        finalIntentmainIntent=newIntent(Intent.ACTION_MAIN, null);
        mainIntent.addCategory(Intent.CATEGORY_LAUNCHER);
        final List<ResolveInfo> apps = packageManager.queryIntentActivities(mainIntent, 0);
        for (ResolveInfo info : apps) {
            finalApplicationInfoapplicationInfo= info.activityInfo.applicationInfo;
            finalStringappName= (String) applicationInfo.loadLabel(packageManager);

            final List<String> permissions = newArrayList<>();

            if (appName != null) {

                try {
                    finalPackageInfopackageInfo= packageManager.getPackageInfo(applicationInfo.packageName, PackageManager.GET_PERMISSIONS);
                    final String[] requestedPermissions = packageInfo.requestedPermissions;

                    if (requestedPermissions != null) {
                        permissions.addAll(Arrays.asList(requestedPermissions));
                    }

                } catch (PackageManager.NameNotFoundException e) {
                    e.printStackTrace();
                }
            }

            appsWithPermission.add(newPair<>(appName, permissions));
        }

        finalListViewlistView= (ListView) findViewById(R.id.list_view);
        finalAppsAdapterappsAdapter=newAppsAdapter(this, appsWithPermission);
        listView.setAdapter(appsAdapter);
    }
}

Secondly you need xml layout list_item.xml

<?xml version="1.0" encoding="utf-8"?><LinearLayoutxmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="match_parent"android:layout_height="wrap_content"android:orientation="horizontal"><TextViewandroid:id="@+id/list_item_appname"android:layout_width="match_parent"android:layout_height="wrap_content"android:layout_weight="2"android:textAppearance="@android:style/TextAppearance.Medium" /><TextViewandroid:id="@+id/list_item_apppermissions"android:layout_width="match_parent"android:layout_height="wrap_content"android:layout_weight="1" /></LinearLayout>

and finally AppsAdapter.java

publicclassAppsAdapterextendsBaseAdapter {

    private final Context mContext;
    privateList<Pair<String, List<String>>> mAppsWithPermission;

    publicAppsAdapter(Context context, List<Pair<String, List<String>>> appsWithPermission) {
        mContext = context;
        mAppsWithPermission = appsWithPermission;
    }

    staticclassViewHolder {
        publicTextView appName;
        publicTextView appPermissions;
    }

    @Overridepublic int getCount() {
        return mAppsWithPermission.size();
    }

    @OverridepublicObjectgetItem(int position) {
        return mAppsWithPermission.get(position);
    }

    @Overridepublic long getItemId(int position) {
        return mAppsWithPermission.get(position).hashCode();
    }

    @OverridepublicViewgetView(int position, View convertView, ViewGroup parent) {
        ViewHolder holder;

        if (convertView == null) {

            convertView = LayoutInflater.from(mContext).inflate(R.layout.list_item, parent, false);
            holder = newViewHolder();
            holder.appName = (TextView) convertView.findViewById(R.id.list_item_appname);
            holder.appPermissions = (TextView) convertView.findViewById(R.id.list_item_apppermissions);

            convertView.setTag(holder);

        } else {
            holder = (ViewHolder) convertView.getTag();
        }

        Pair<String, List<String>> item = mAppsWithPermission.get(position);

        holder.appName.setText(item.first);
        holder.appPermissions.setText(item.second.toString());

        return convertView;
    }
}

Solution 2:

I see you've already figured out how to get a list of all installed applications and their respective permissions, which is good. In order to make a ListView with multiple columns, though, you'll need to implement a ListViewAdapter.

A really great resource for figuring out how to do this can be found here.

If you're confused about anything on that link, or something doesn't work, let me know.

Code:

PopAnalysis.java

publicclassPopAnalysisextendsActivity {
    publicstatic final StringFIRST_COLUMN = "First";
    publicstatic final StringSECOND_COLUMN = "Second";

    ListView appList;
    privateTextSwitcher mSwitcher;
    TextView myText;
    privateArrayList results = newArrayList();
    privateArrayList<HashMap<String, String>> list;

    protectedvoidonCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.popupanalysis);

        appList = (ListView)findViewById(R.id.listViewApp);
        HashMap<String,String> t1 = newHashMap<String, String>();
        t1.put(FIRST_COLUMN, "App 1");
        t1.put(SECOND_COLUMN, "Permission 1");
        list.add(t1);

        ListViewAdapter adapter = newListViewAdapter(this, list);
        listView.setAdapter(adapter);
    }
}

ListViewAdapter.java

publicclassListViewAdapterextendsBaseAdapter {
    publicstatic final StringFIRST_COLUMN = "First";
    publicstatic final StringSECOND_COLUMN = "Second";

    publicArrayList<HashMap<String, String>> list;
    Activity activity;
    TextView txtFirst;
    TextView txtSecond;


    publicListViewAdapter(Activity activity,ArrayList<HashMap<String, String>> list){
        super();
        this.activity=activity;
        this.list=list;
    }

    @Overridepublic int getCount() {
        return list.size();
    }

    @OverridepublicObjectgetItem(int position) {
        return list.get(position);
    }

    @Overridepublic long getItemId(int position) {
        return0;
    }



    @OverridepublicViewgetView(int position, View convertView, ViewGroup parent) {
        LayoutInflater inflater=activity.getLayoutInflater();

        if(convertView == null){

            convertView=inflater.inflate(R.layout.column_row_layout, null);

            txtFirst=(TextView) convertView.findViewById(R.id.application);
            txtSecond=(TextView) convertView.findViewById(R.id.permissions);

        }

        HashMap<String, String> map=list.get(position);
        txtFirst.setText(map.get(FIRST_COLUMN));
        txtSecond.setText(map.get(SECOND_COLUMN));

        return convertView;
    }
}

column_row_layout.xml

<LinearLayoutxmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="match_parent"android:layout_height="match_parent"><TextViewandroid:id="@+id/application"android:layout_height="wrap_content"android:layout_width="0dp"android:layout_weight="1"android:textStyle="bold" /><TextViewandroid:id="@+id/permissions"android:layout_height="wrap_content"android:layout_width="0dp"android:layout_weight="1"/></LinearLayout>

In PopAnalysis.java I added only one entry to simply show how it's done. Certainly you shouldn't have any issues implementing the data you want into it.

Solution 3:

Instead of 2 column listview , you can also try ExpandableListView. Clicking on the item with expand a detail view just below to it. detail view will contain the permissions of that app.

Expandable Listview Tutorial

BTW, there is no way in SDK's listview to have multiple column. What you can do is to have a pseudo-multicolumn list view like using multiple textview(or other kind of view) in the same row. In that case you will need to make a custom adapter for your list view and a custom row layout file.

If you really want to have something multi-column, then either 3rd party libraries or TableLayout is your only option.

TableLayout tutorial

Solution 4:

to make two column listview you have to implement custom listview. please read this link

in program_list.xml instead of imageview take textview it will resolve your problem.